--- title: Run a demo assessment | Lexplore Inside description: Try the Lexplore web assessment flow and receive the results as a JSON payload, including SVG visualisations, at your own webhook. --- [Skip to the main content.](https://lexplore.com/partners/demo#main-content) [![Lexplore](https://lexplore.com/hs-fs/hubfs/Lexplore_22_Logo.png?width=555&height=173&name=Lexplore_22_Logo.png "Lexplore")](https://lexplore.com?hsLang=en) [![Lexplore](https://lexplore.com/hs-fs/hubfs/Lexplore_22_Logo.png?width=555&height=173&name=Lexplore_22_Logo.png "Lexplore")](https://lexplore.com?hsLang=en) - [Schools](https://lexplore.com/schools) - [Parents](https://lexplore.com/parents) - [Partners](https://lexplore.com/partners) - [Science](https://lexplore.com/science) - [Contact](https://lexplore.com/contact) Toggle Menu Toggle Menu - [Schools](https://lexplore.com/schools) - [Parents](https://lexplore.com/parents) - [Partners](https://lexplore.com/partners) - [Science](https://lexplore.com/science) - [Contact](https://lexplore.com/contact) Lexplore Inside # Run a demo assessment Experience the full web assessment flow and receive the results where you want. [Start the demo](https://lexplore.com/partners/demo#start-demo)[Back to overview](https://lexplore.com/partners?hsLang=en) ## How it works 1. **Fill in the form.** Choose age, level and languages, and add the webhook URL where the results should go. 2. **Run the assessment.** You’re redirected straight to the Web Assessment to complete the reading test. 3. **Get results.** The result is sent to your webhook as JSON, including SVG visualisations. ## Start the demo Create a real assessment and receive results via webhook. Name of test person \* Age \* Assessment level \*Select…123456789 Grade / school year comparison. Assessment locale \*Select…sv-SEen-GBen-US UI language \*Select…en-USen-GBsv-SE Webhook URL \* Where demo results are sent. Advanced (optional)Return URLLogo URL Seed color Primary color Secondary color Start demo Reset ### Helpful links [Get a webhook URL (webhook.cool) ↗](https://webhook.cool)[Open result renderer (GitHub) ↗](https://optolexia.github.io/AssessmentDataViewer/) Where do I see the results? Use **webhook.cool** to receive and inspect the result payload. 1. Go to [https://webhook.cool](https://webhook.cool) 2. Create a new webhook channel 3. Copy the **Webhook URL** in this format: `https://.webhook.cool` 4. Paste it into the `Webhook URL` field in the form When the assessment is completed, Lexplore sends the result as a JSON payload to your Webhook URL. **Inspect the payload** Open the viewer link provided by webhook.cool (example format): `https://webhook.cool/at//` You’ll see the full JSON payload appear there as soon as the assessment is completed. Optional: Return URL If you set a **Return URL**, you’ll be redirected there after the screening is completed. Tip: you can use the same webhook.cool *viewer URL*: `https://webhook.cool/at//` Want to visualise the results? Copy the JSON payload from webhook.cool and paste it into [https://optolexia.github.io/AssessmentDataViewer/](https://optolexia.github.io/AssessmentDataViewer/) This renders key result metrics, SVG visualisations, and quality flags. Good to know - This is a **real assessment flow** (not a mock). - Branding options only affect UI accents — results and analysis are unchanged. - All data is delivered only to the webhook URL you provide. ## What you’ll receive A structured JSON payload delivered to your webhook when the assessment is completed. This demo sends the same result structure used in production. You can inspect the raw payload, store it, or transform it to fit your product. ### Example result payload This is a simplified example of the JSON sent to your webhook when an assessment is completed. ``` { "eventType": "assessmentCompleted", "assessmentId": "e4e5e43e-b270-4448-b7cf-4e61af4e1fd4", "occurredAt": "2026-01-09T13:31:54.2618356+00:00", "result": { "averages": { "percentile": 99, "level": 5, "wcpmAdjusted": 236, "zScore": 230, "gle": 108, "readingAge": 192 }, "text1": { "readingMode": 1, "duration": "00:00:05.7660000", "wpm": 208.12, "wcpmAdjusted": 196.19, "percentile": 99 }, "text2": { "readingMode": 1, "duration": "00:00:02.0640000", "wpm": 581.40, "wcpmAdjusted": 275.24, "percentile": 99 }, "visualizations": { "ran": { "format": "svg", "bytes": 48213 }, "oral": { "format": "svg", "bytes": 39102 }, "silent": { "format": "svg", "bytes": 52780 } } } } ``` Field names and structure may evolve over time, but core result metrics and identifiers remain stable. SVG visualisations are delivered inline as SVG strings. For readability, the example above shows only the available visualisation keys and their sizes. ### Example visualisation (SVG) Each assessment returns two or three SVG visualisations, depending on the test setup. They are delivered inline in the result payload and can be rendered directly in your UI. ![Example SVG visualisation included in the result payload](https://lexplore.com/hubfs/anim.svg) Shown here as a rendered example. In the payload, the SVG is delivered as a string. ## Let’s explore your integration Whether you want to add reading assessment, improve learning insights, or enhance your reading experience, we’ll help you choose the best setup. [Get in touch](https://lexplore.com/contact?interest=partner&hsLang=en)[Read about Lexplore Inside](https://lexplore.com/partners?hsLang=en) Technical questions? 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